org.dkpro.tc.ml.libsvm

Class LibsvmAdapter

java.lang.Object

org.dkpro.tc.ml.libsvm.LibsvmAdapter

All Implemented Interfaces:

TcShallowLearningAdapter

public class LibsvmAdapter
extends Object
implements TcShallowLearningAdapter

Libsvm offers various configuration switches for the SVM type and Kernel we defined constant values in this class with more detail explanations.

 -s svm_type (default 0)
                0 -- C-SVC
                1 -- nu-SVC
                2 -- one-class SVM
                3 -- epsilon-SVR
                4 -- nu-SVR
 -t kernel_type (default 2)
                0 -- linear: u'*v
                1 -- polynomial: (gamma*u'*v + coef0)^degree
                2 -- radial basis function: exp(-gamma*|u-v|^2)
                3 -- sigmoid: tanh(gamma*u'*v + coef0)
 -d degree : set degree in kernel function (default 3) 
 -g gamma : set gamma in kernel function (default 1/num_features) 
 -r coef0 : set coef0 in kernel function (default 0)
 -c cost : set the parameter C of C-SVC, epsilon-SVR, and nu-SVR (default 1)
 -n nu : set the parameter nu of nu-SVC, one-class SVM, and nu-SVR (default 0.5) 
 -p epsilon : set the epsilon in loss function of epsilon-SVR (default 0.1) 
 -m cachesize : set cache memory size in MB (default 100) 
 -e epsilon : set tolerance of termination criterion (default 0.001) 
 -h shrinking: whether to use the shrinking heuristics, 0 or 1 (default 1) 
 -b probability_estimates : whether to train a SVC or SVR model for probability estimates, 0 or 1 (default 0) 
 -wi weight : set the parameter C of class i to weight*C, for C-SVC (default 1)
 

Constructor Summary

Constructors

Constructor and Description
LibsvmAdapter()

Method Summary

Modifier and Type	Method and Description
String	getDataWriterClass()
static String	getFeatureNameMappingFilename()
static String	getFeatureNames()
org.dkpro.lab.task.impl.DimensionBundle<Collection<String>>	getFoldDimensionBundle(String[] files, int folds)
static TcShallowLearningAdapter	getInstance()
Class<? extends ModelSerialization_ImplBase>	getLoadModelConnectorClass()
Class<? extends org.dkpro.lab.reporting.ReportBase>	getMajorityClassBaselineIdReportClass()
String	getName()
Class<? extends org.dkpro.lab.reporting.ReportBase>	getOutcomeIdReportClass()
static String	getOutcomeMappingFilename()
Class<? extends org.dkpro.lab.reporting.ReportBase>	getRandomBaselineIdReportClass()
ModelSerializationTask	getSaveModelTask()
org.dkpro.lab.task.impl.ExecutableTaskBase	getTestTask()
String	toString()
boolean	useSparseFeatures()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LibsvmAdapter

public LibsvmAdapter()

Method Detail

getInstance

public static TcShallowLearningAdapter getInstance()

getOutcomeMappingFilename

public static String getOutcomeMappingFilename()

getFeatureNameMappingFilename

public static String getFeatureNameMappingFilename()

getFeatureNames

public static String getFeatureNames()

getTestTask

public org.dkpro.lab.task.impl.ExecutableTaskBase getTestTask()

Specified by:

getTestTask in interface TcShallowLearningAdapter

getOutcomeIdReportClass

public Class<? extends org.dkpro.lab.reporting.ReportBase> getOutcomeIdReportClass()

Specified by:

getOutcomeIdReportClass in interface TcShallowLearningAdapter

getMajorityClassBaselineIdReportClass

public Class<? extends org.dkpro.lab.reporting.ReportBase> getMajorityClassBaselineIdReportClass()

Specified by:

getMajorityClassBaselineIdReportClass in interface TcShallowLearningAdapter

getRandomBaselineIdReportClass

public Class<? extends org.dkpro.lab.reporting.ReportBase> getRandomBaselineIdReportClass()

Specified by:

getRandomBaselineIdReportClass in interface TcShallowLearningAdapter

getFoldDimensionBundle

public org.dkpro.lab.task.impl.DimensionBundle<Collection<String>> getFoldDimensionBundle(String[] files,
                                                                                          int folds)

Specified by:

getFoldDimensionBundle in interface TcShallowLearningAdapter

getDataWriterClass

public String getDataWriterClass()

Specified by:

getDataWriterClass in interface TcShallowLearningAdapter

getLoadModelConnectorClass

public Class<? extends ModelSerialization_ImplBase> getLoadModelConnectorClass()

Specified by:

getLoadModelConnectorClass in interface TcShallowLearningAdapter

getSaveModelTask

public ModelSerializationTask getSaveModelTask()

Specified by:

getSaveModelTask in interface TcShallowLearningAdapter

useSparseFeatures

public boolean useSparseFeatures()

Specified by:

useSparseFeatures in interface TcShallowLearningAdapter

toString

public String toString()

Overrides:

toString in class Object

getName

public String getName()

Specified by:

getName in interface TcShallowLearningAdapter